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-rw-r--r--libavcodec/videotoolboxenc.c2003
1 files changed, 2003 insertions, 0 deletions
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
new file mode 100644
index 0000000000..4345ca37b2
--- /dev/null
+++ b/libavcodec/videotoolboxenc.c
@@ -0,0 +1,2003 @@
+/*
+ * copyright (c) 2015 Rick Kern <kernrj@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <VideoToolbox/VideoToolbox.h>
+#include <CoreVideo/CoreVideo.h>
+#include <CoreMedia/CoreMedia.h>
+#include <TargetConditionals.h>
+#include <Availability.h>
+#include "avcodec.h"
+#include "libavutil/opt.h"
+#include "libavutil/avassert.h"
+#include "libavutil/atomic.h"
+#include "libavutil/avstring.h"
+#include "libavcodec/avcodec.h"
+#include "libavutil/pixdesc.h"
+#include "internal.h"
+#include <pthread.h>
+
+#if !CONFIG_VT_BT2020
+# define kCVImageBufferColorPrimaries_ITU_R_2020 CFSTR("ITU_R_2020")
+# define kCVImageBufferTransferFunction_ITU_R_2020 CFSTR("ITU_R_2020")
+# define kCVImageBufferYCbCrMatrix_ITU_R_2020 CFSTR("ITU_R_2020")
+#endif
+
+typedef enum VT_H264Profile {
+ H264_PROF_AUTO,
+ H264_PROF_BASELINE,
+ H264_PROF_MAIN,
+ H264_PROF_HIGH,
+ H264_PROF_COUNT
+} VT_H264Profile;
+
+typedef enum VTH264Entropy{
+ VT_ENTROPY_NOT_SET,
+ VT_CAVLC,
+ VT_CABAC
+} VTH264Entropy;
+
+static const uint8_t start_code[] = { 0, 0, 0, 1 };
+
+typedef struct BufNode {
+ CMSampleBufferRef cm_buffer;
+ struct BufNode* next;
+ int error;
+} BufNode;
+
+typedef struct VTEncContext {
+ AVClass *class;
+ VTCompressionSessionRef session;
+ CFStringRef ycbcr_matrix;
+ CFStringRef color_primaries;
+ CFStringRef transfer_function;
+
+ pthread_mutex_t lock;
+ pthread_cond_t cv_sample_sent;
+
+ int async_error;
+
+ BufNode *q_head;
+ BufNode *q_tail;
+
+ int64_t frame_ct_out;
+ int64_t frame_ct_in;
+
+ int64_t first_pts;
+ int64_t dts_delta;
+
+ int64_t profile;
+ int64_t level;
+ int64_t entropy;
+ int64_t realtime;
+ int64_t frames_before;
+ int64_t frames_after;
+
+ int64_t allow_sw;
+
+ bool flushing;
+ bool has_b_frames;
+ bool warned_color_range;
+} VTEncContext;
+
+static int vtenc_populate_extradata(AVCodecContext *avctx,
+ CMVideoCodecType codec_type,
+ CFStringRef profile_level,
+ CFNumberRef gamma_level,
+ CFDictionaryRef enc_info,
+ CFDictionaryRef pixel_buffer_info);
+
+/**
+ * NULL-safe release of *refPtr, and sets value to NULL.
+ */
+static void vt_release_num(CFNumberRef* refPtr){
+ if (!*refPtr) {
+ return;
+ }
+
+ CFRelease(*refPtr);
+ *refPtr = NULL;
+}
+
+static void set_async_error(VTEncContext *vtctx, int err)
+{
+ BufNode *info;
+
+ pthread_mutex_lock(&vtctx->lock);
+
+ vtctx->async_error = err;
+
+ info = vtctx->q_head;
+ vtctx->q_head = vtctx->q_tail = NULL;
+
+ while (info) {
+ BufNode *next = info->next;
+ CFRelease(info->cm_buffer);
+ av_free(info);
+ info = next;
+ }
+
+ pthread_mutex_unlock(&vtctx->lock);
+}
+
+static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf)
+{
+ BufNode *info;
+
+ pthread_mutex_lock(&vtctx->lock);
+
+ if (vtctx->async_error) {
+ pthread_mutex_unlock(&vtctx->lock);
+ return vtctx->async_error;
+ }
+
+ if (vtctx->flushing && vtctx->frame_ct_in == vtctx->frame_ct_out) {
+ *buf = NULL;
+
+ pthread_mutex_unlock(&vtctx->lock);
+ return 0;
+ }
+
+ while (!vtctx->q_head && !vtctx->async_error && wait) {
+ pthread_cond_wait(&vtctx->cv_sample_sent, &vtctx->lock);
+ }
+
+ if (!vtctx->q_head) {
+ pthread_mutex_unlock(&vtctx->lock);
+ *buf = NULL;
+ return 0;
+ }
+
+ info = vtctx->q_head;
+ vtctx->q_head = vtctx->q_head->next;
+ if (!vtctx->q_head) {
+ vtctx->q_tail = NULL;
+ }
+
+ pthread_mutex_unlock(&vtctx->lock);
+
+ *buf = info->cm_buffer;
+ av_free(info);
+
+ vtctx->frame_ct_out++;
+
+ return 0;
+}
+
+static void vtenc_q_push(VTEncContext *vtctx, CMSampleBufferRef buffer)
+{
+ BufNode *info = av_malloc(sizeof(BufNode));
+ if (!info) {
+ set_async_error(vtctx, AVERROR(ENOMEM));
+ return;
+ }
+
+ CFRetain(buffer);
+ info->cm_buffer = buffer;
+ info->next = NULL;
+
+ pthread_mutex_lock(&vtctx->lock);
+ pthread_cond_signal(&vtctx->cv_sample_sent);
+
+ if (!vtctx->q_head) {
+ vtctx->q_head = info;
+ } else {
+ vtctx->q_tail->next = info;
+ }
+
+ vtctx->q_tail = info;
+
+ pthread_mutex_unlock(&vtctx->lock);
+}
+
+static int count_nalus(size_t length_code_size,
+ CMSampleBufferRef sample_buffer,
+ int *count)
+{
+ size_t offset = 0;
+ int status;
+ int nalu_ct = 0;
+ uint8_t size_buf[4];
+ size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
+ CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
+
+ if (length_code_size > 4)
+ return AVERROR_INVALIDDATA;
+
+ while (offset < src_size) {
+ size_t curr_src_len;
+ size_t box_len = 0;
+ size_t i;
+
+ status = CMBlockBufferCopyDataBytes(block,
+ offset,
+ length_code_size,
+ size_buf);
+
+ for (i = 0; i < length_code_size; i++) {
+ box_len <<= 8;
+ box_len |= size_buf[i];
+ }
+
+ curr_src_len = box_len + length_code_size;
+ offset += curr_src_len;
+
+ nalu_ct++;
+ }
+
+ *count = nalu_ct;
+ return 0;
+}
+
+static CMVideoCodecType get_cm_codec_type(enum AVCodecID id)
+{
+ switch (id) {
+ case AV_CODEC_ID_H264: return kCMVideoCodecType_H264;
+ default: return 0;
+ }
+}
+
+/**
+ * Get the parameter sets from a CMSampleBufferRef.
+ * @param dst If *dst isn't NULL, the parameters are copied into existing
+ * memory. *dst_size must be set accordingly when *dst != NULL.
+ * If *dst is NULL, it will be allocated.
+ * In all cases, *dst_size is set to the number of bytes used starting
+ * at *dst.
+ */
+static int get_params_size(
+ AVCodecContext *avctx,
+ CMVideoFormatDescriptionRef vid_fmt,
+ size_t *size)
+{
+ size_t total_size = 0;
+ size_t ps_count;
+ int is_count_bad = 0;
+ size_t i;
+ int status;
+ status = CMVideoFormatDescriptionGetH264ParameterSetAtIndex(vid_fmt,
+ 0,
+ NULL,
+ NULL,
+ &ps_count,
+ NULL);
+ if (status) {
+ is_count_bad = 1;
+ ps_count = 0;
+ status = 0;
+ }
+
+ for (i = 0; i < ps_count || is_count_bad; i++) {
+ const uint8_t *ps;
+ size_t ps_size;
+ status = CMVideoFormatDescriptionGetH264ParameterSetAtIndex(vid_fmt,
+ i,
+ &ps,
+ &ps_size,
+ NULL,
+ NULL);
+ if (status) {
+ /*
+ * When ps_count is invalid, status != 0 ends the loop normally
+ * unless we didn't get any parameter sets.
+ */
+ if (i > 0 && is_count_bad) status = 0;
+
+ break;
+ }
+
+ total_size += ps_size + sizeof(start_code);
+ }
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting parameter set sizes: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ *size = total_size;
+ return 0;
+}
+
+static int copy_param_sets(
+ AVCodecContext *avctx,
+ CMVideoFormatDescriptionRef vid_fmt,
+ uint8_t *dst,
+ size_t dst_size)
+{
+ size_t ps_count;
+ int is_count_bad = 0;
+ int status;
+ size_t offset = 0;
+ size_t i;
+
+ status = CMVideoFormatDescriptionGetH264ParameterSetAtIndex(vid_fmt,
+ 0,
+ NULL,
+ NULL,
+ &ps_count,
+ NULL);
+ if (status) {
+ is_count_bad = 1;
+ ps_count = 0;
+ status = 0;
+ }
+
+
+ for (i = 0; i < ps_count || is_count_bad; i++) {
+ const uint8_t *ps;
+ size_t ps_size;
+ size_t next_offset;
+
+ status = CMVideoFormatDescriptionGetH264ParameterSetAtIndex(vid_fmt,
+ i,
+ &ps,
+ &ps_size,
+ NULL,
+ NULL);
+ if (status) {
+ if (i > 0 && is_count_bad) status = 0;
+
+ break;
+ }
+
+ next_offset = offset + sizeof(start_code) + ps_size;
+ if (dst_size < next_offset) {
+ av_log(avctx, AV_LOG_ERROR, "Error: buffer too small for parameter sets.\n");
+ return AVERROR_BUFFER_TOO_SMALL;
+ }
+
+ memcpy(dst + offset, start_code, sizeof(start_code));
+ offset += sizeof(start_code);
+
+ memcpy(dst + offset, ps, ps_size);
+ offset = next_offset;
+ }
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting parameter set data: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ return 0;
+}
+
+static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
+{
+ CMVideoFormatDescriptionRef vid_fmt;
+ size_t total_size;
+ int status;
+
+ vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
+ if (!vid_fmt) {
+ av_log(avctx, AV_LOG_ERROR, "No video format.\n");
+ return AVERROR_EXTERNAL;
+ }
+
+ status = get_params_size(avctx, vid_fmt, &total_size);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Could not get parameter sets.\n");
+ return status;
+ }
+
+ avctx->extradata = av_mallocz(total_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!avctx->extradata) {
+ return AVERROR(ENOMEM);
+ }
+ avctx->extradata_size = total_size;
+
+ status = copy_param_sets(avctx, vid_fmt, avctx->extradata, total_size);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Could not copy param sets.\n");
+ return status;
+ }
+
+ return 0;
+}
+
+static void vtenc_output_callback(
+ void *ctx,
+ void *sourceFrameCtx,
+ OSStatus status,
+ VTEncodeInfoFlags flags,
+ CMSampleBufferRef sample_buffer)
+{
+ AVCodecContext *avctx = ctx;
+ VTEncContext *vtctx = avctx->priv_data;
+
+ if (vtctx->async_error) {
+ if(sample_buffer) CFRelease(sample_buffer);
+ return;
+ }
+
+ if (status || !sample_buffer) {
+ av_log(avctx, AV_LOG_ERROR, "Error encoding frame: %d\n", (int)status);
+ set_async_error(vtctx, AVERROR_EXTERNAL);
+ return;
+ }
+
+ if (!avctx->extradata && (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
+ int set_status = set_extradata(avctx, sample_buffer);
+ if (set_status) {
+ set_async_error(vtctx, set_status);
+ return;
+ }
+ }
+
+ vtenc_q_push(vtctx, sample_buffer);
+}
+
+static int get_length_code_size(
+ AVCodecContext *avctx,
+ CMSampleBufferRef sample_buffer,
+ size_t *size)
+{
+ CMVideoFormatDescriptionRef vid_fmt;
+ int isize;
+ int status;
+
+ vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
+ if (!vid_fmt) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting buffer format description.\n");
+ return AVERROR_EXTERNAL;
+ }
+
+ status = CMVideoFormatDescriptionGetH264ParameterSetAtIndex(vid_fmt,
+ 0,
+ NULL,
+ NULL,
+ NULL,
+ &isize);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting length code size: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ *size = isize;
+ return 0;
+}
+
+/*
+ * Returns true on success.
+ *
+ * If profile_level_val is NULL and this method returns true, don't specify the
+ * profile/level to the encoder.
+ */
+static bool get_vt_profile_level(AVCodecContext *avctx,
+ CFStringRef *profile_level_val)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+ int64_t profile = vtctx->profile;
+
+ if (profile == H264_PROF_AUTO && vtctx->level) {
+ //Need to pick a profile if level is not auto-selected.
+ profile = vtctx->has_b_frames ? H264_PROF_MAIN : H264_PROF_BASELINE;
+ }
+
+ *profile_level_val = NULL;
+
+ switch (profile) {
+ case H264_PROF_AUTO:
+ return true;
+
+ case H264_PROF_BASELINE:
+ switch (vtctx->level) {
+ case 0: *profile_level_val = kVTProfileLevel_H264_Baseline_AutoLevel; break;
+ case 13: *profile_level_val = kVTProfileLevel_H264_Baseline_1_3; break;
+ case 30: *profile_level_val = kVTProfileLevel_H264_Baseline_3_0; break;
+ case 31: *profile_level_val = kVTProfileLevel_H264_Baseline_3_1; break;
+ case 32: *profile_level_val = kVTProfileLevel_H264_Baseline_3_2; break;
+ case 40: *profile_level_val = kVTProfileLevel_H264_Baseline_4_0; break;
+ case 41: *profile_level_val = kVTProfileLevel_H264_Baseline_4_1; break;
+ case 42: *profile_level_val = kVTProfileLevel_H264_Baseline_4_2; break;
+ case 50: *profile_level_val = kVTProfileLevel_H264_Baseline_5_0; break;
+ case 51: *profile_level_val = kVTProfileLevel_H264_Baseline_5_1; break;
+ case 52: *profile_level_val = kVTProfileLevel_H264_Baseline_5_2; break;
+ }
+ break;
+
+ case H264_PROF_MAIN:
+ switch (vtctx->level) {
+ case 0: *profile_level_val = kVTProfileLevel_H264_Main_AutoLevel; break;
+ case 30: *profile_level_val = kVTProfileLevel_H264_Main_3_0; break;
+ case 31: *profile_level_val = kVTProfileLevel_H264_Main_3_1; break;
+ case 32: *profile_level_val = kVTProfileLevel_H264_Main_3_2; break;
+ case 40: *profile_level_val = kVTProfileLevel_H264_Main_4_0; break;
+ case 41: *profile_level_val = kVTProfileLevel_H264_Main_4_1; break;
+ case 42: *profile_level_val = kVTProfileLevel_H264_Main_4_2; break;
+ case 50: *profile_level_val = kVTProfileLevel_H264_Main_5_0; break;
+ case 51: *profile_level_val = kVTProfileLevel_H264_Main_5_1; break;
+ case 52: *profile_level_val = kVTProfileLevel_H264_Main_5_2; break;
+ }
+ break;
+
+ case H264_PROF_HIGH:
+ switch (vtctx->level) {
+ case 0: *profile_level_val = kVTProfileLevel_H264_High_AutoLevel; break;
+ case 30: *profile_level_val = kVTProfileLevel_H264_High_3_0; break;
+ case 31: *profile_level_val = kVTProfileLevel_H264_High_3_1; break;
+ case 32: *profile_level_val = kVTProfileLevel_H264_High_3_2; break;
+ case 40: *profile_level_val = kVTProfileLevel_H264_High_4_0; break;
+ case 41: *profile_level_val = kVTProfileLevel_H264_High_4_1; break;
+ case 42: *profile_level_val = kVTProfileLevel_H264_High_4_2; break;
+ case 50: *profile_level_val = kVTProfileLevel_H264_High_5_0; break;
+ case 51: *profile_level_val = kVTProfileLevel_H264_High_5_1; break;
+ case 52: *profile_level_val = kVTProfileLevel_H264_High_5_2; break;
+ }
+ break;
+ }
+
+ if (!*profile_level_val) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
+ return false;
+ }
+
+ return true;
+}
+
+static int get_cv_pixel_format(AVCodecContext* avctx,
+ enum AVPixelFormat fmt,
+ enum AVColorRange range,
+ int* av_pixel_format,
+ int* range_guessed)
+{
+ if (range_guessed) *range_guessed = range != AVCOL_RANGE_MPEG &&
+ range != AVCOL_RANGE_JPEG;
+
+ //MPEG range is used when no range is set
+ if (fmt == AV_PIX_FMT_NV12) {
+ *av_pixel_format = range == AVCOL_RANGE_JPEG ?
+ kCVPixelFormatType_420YpCbCr8BiPlanarFullRange :
+ kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
+ } else if (fmt == AV_PIX_FMT_YUV420P) {
+ *av_pixel_format = range == AVCOL_RANGE_JPEG ?
+ kCVPixelFormatType_420YpCbCr8PlanarFullRange :
+ kCVPixelFormatType_420YpCbCr8Planar;
+ } else {
+ return AVERROR(EINVAL);
+ }
+
+ return 0;
+}
+
+static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict) {
+ VTEncContext *vtctx = avctx->priv_data;
+
+ if (vtctx->color_primaries) {
+ CFDictionarySetValue(dict,
+ kCVImageBufferColorPrimariesKey,
+ vtctx->color_primaries);
+ }
+
+ if (vtctx->transfer_function) {
+ CFDictionarySetValue(dict,
+ kCVImageBufferTransferFunctionKey,
+ vtctx->transfer_function);
+ }
+
+ if (vtctx->ycbcr_matrix) {
+ CFDictionarySetValue(dict,
+ kCVImageBufferYCbCrMatrixKey,
+ vtctx->ycbcr_matrix);
+ }
+}
+
+static int create_cv_pixel_buffer_info(AVCodecContext* avctx,
+ CFMutableDictionaryRef* dict)
+{
+ CFNumberRef cv_color_format_num = NULL;
+ CFNumberRef width_num = NULL;
+ CFNumberRef height_num = NULL;
+ CFMutableDictionaryRef pixel_buffer_info = NULL;
+ int cv_color_format;
+ int status = get_cv_pixel_format(avctx,
+ avctx->pix_fmt,
+ avctx->color_range,
+ &cv_color_format,
+ NULL);
+ if (status) return status;
+
+ pixel_buffer_info = CFDictionaryCreateMutable(
+ kCFAllocatorDefault,
+ 20,
+ &kCFCopyStringDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+
+ if (!pixel_buffer_info) goto pbinfo_nomem;
+
+ cv_color_format_num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &cv_color_format);
+ if (!cv_color_format_num) goto pbinfo_nomem;
+
+ CFDictionarySetValue(pixel_buffer_info,
+ kCVPixelBufferPixelFormatTypeKey,
+ cv_color_format_num);
+ vt_release_num(&cv_color_format_num);
+
+ width_num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &avctx->width);
+ if (!width_num) return AVERROR(ENOMEM);
+
+ CFDictionarySetValue(pixel_buffer_info,
+ kCVPixelBufferWidthKey,
+ width_num);
+ vt_release_num(&width_num);
+
+ height_num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &avctx->height);
+ if (!height_num) goto pbinfo_nomem;
+
+ CFDictionarySetValue(pixel_buffer_info,
+ kCVPixelBufferHeightKey,
+ height_num);
+ vt_release_num(&height_num);
+
+ add_color_attr(avctx, pixel_buffer_info);
+
+ *dict = pixel_buffer_info;
+ return 0;
+
+pbinfo_nomem:
+ vt_release_num(&cv_color_format_num);
+ vt_release_num(&width_num);
+ vt_release_num(&height_num);
+ if (pixel_buffer_info) CFRelease(pixel_buffer_info);
+
+ return AVERROR(ENOMEM);
+}
+
+static int get_cv_color_primaries(AVCodecContext *avctx,
+ CFStringRef *primaries)
+{
+ enum AVColorPrimaries pri = avctx->color_primaries;
+ switch (pri) {
+ case AVCOL_PRI_UNSPECIFIED:
+ *primaries = NULL;
+ break;
+
+ case AVCOL_PRI_BT709:
+ *primaries = kCVImageBufferColorPrimaries_ITU_R_709_2;
+ break;
+
+ case AVCOL_PRI_BT2020:
+ *primaries = kCVImageBufferColorPrimaries_ITU_R_2020;
+ break;
+
+ default:
+ av_log(avctx, AV_LOG_ERROR, "Color primaries %s is not supported.\n", av_color_primaries_name(pri));
+ *primaries = NULL;
+ return -1;
+ }
+
+ return 0;
+}
+
+static int get_cv_transfer_function(AVCodecContext *avctx,
+ CFStringRef *transfer_fnc,
+ CFNumberRef *gamma_level)
+{
+ enum AVColorTransferCharacteristic trc = avctx->color_trc;
+ Float32 gamma;
+ *gamma_level = NULL;
+
+ switch (trc) {
+ case AVCOL_TRC_UNSPECIFIED:
+ *transfer_fnc = NULL;
+ break;
+
+ case AVCOL_TRC_BT709:
+ *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_709_2;
+ break;
+
+ case AVCOL_TRC_SMPTE240M:
+ *transfer_fnc = kCVImageBufferTransferFunction_SMPTE_240M_1995;
+ break;
+
+ case AVCOL_TRC_GAMMA22:
+ gamma = 2.2;
+ *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
+ *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
+ break;
+
+ case AVCOL_TRC_GAMMA28:
+ gamma = 2.8;
+ *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
+ *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
+ break;
+
+ case AVCOL_TRC_BT2020_10:
+ case AVCOL_TRC_BT2020_12:
+ *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_2020;
+ break;
+
+ default:
+ av_log(avctx, AV_LOG_ERROR, "Transfer function %s is not supported.\n", av_color_transfer_name(trc));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int get_cv_ycbcr_matrix(AVCodecContext *avctx, CFStringRef *matrix) {
+ switch(avctx->colorspace) {
+ case AVCOL_SPC_BT709:
+ *matrix = kCVImageBufferYCbCrMatrix_ITU_R_709_2;
+ break;
+
+ case AVCOL_SPC_UNSPECIFIED:
+ *matrix = NULL;
+ break;
+
+ case AVCOL_SPC_BT470BG:
+ case AVCOL_SPC_SMPTE170M:
+ *matrix = kCVImageBufferYCbCrMatrix_ITU_R_601_4;
+ break;
+
+ case AVCOL_SPC_SMPTE240M:
+ *matrix = kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
+ break;
+
+ case AVCOL_SPC_BT2020_NCL:
+ *matrix = kCVImageBufferYCbCrMatrix_ITU_R_2020;
+ break;
+
+ default:
+ av_log(avctx, AV_LOG_ERROR, "Color space %s is not supported.\n", av_color_space_name(avctx->colorspace));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int vtenc_create_encoder(AVCodecContext *avctx,
+ CMVideoCodecType codec_type,
+ CFStringRef profile_level,
+ CFNumberRef gamma_level,
+ CFDictionaryRef enc_info,
+ CFDictionaryRef pixel_buffer_info,
+ VTCompressionSessionRef *session)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+ SInt32 bit_rate = avctx->bit_rate;
+ CFNumberRef bit_rate_num;
+
+ int status = VTCompressionSessionCreate(kCFAllocatorDefault,
+ avctx->width,
+ avctx->height,
+ codec_type,
+ enc_info,
+ pixel_buffer_info,
+ kCFAllocatorDefault,
+ vtenc_output_callback,
+ avctx,
+ session);
+
+ if (status || !vtctx->session) {
+ av_log(avctx, AV_LOG_ERROR, "Error: cannot create compression session: %d\n", status);
+
+#if !TARGET_OS_IPHONE
+ if (!vtctx->allow_sw) {
+ av_log(avctx, AV_LOG_ERROR, "Try -allow_sw 1. The hardware encoder may be busy, or not supported.\n");
+ }
+#endif
+
+ return AVERROR_EXTERNAL;
+ }
+
+ bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &bit_rate);
+ if (!bit_rate_num) return AVERROR(ENOMEM);
+
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_AverageBitRate,
+ bit_rate_num);
+ CFRelease(bit_rate_num);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting bitrate property: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ if (profile_level) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_ProfileLevel,
+ profile_level);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting profile/level property: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+ if (avctx->gop_size > 0) {
+ CFNumberRef interval = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberIntType,
+ &avctx->gop_size);
+ if (!interval) {
+ return AVERROR(ENOMEM);
+ }
+
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_MaxKeyFrameInterval,
+ interval);
+ CFRelease(interval);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting 'max key-frame interval' property: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+ if (vtctx->frames_before) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_MoreFramesBeforeStart,
+ kCFBooleanTrue);
+
+ if (status == kVTPropertyNotSupportedErr) {
+ av_log(avctx, AV_LOG_WARNING, "frames_before property is not supported on this device. Ignoring.\n");
+ } else if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting frames_before property: %d\n", status);
+ }
+ }
+
+ if (vtctx->frames_after) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_MoreFramesAfterEnd,
+ kCFBooleanTrue);
+
+ if (status == kVTPropertyNotSupportedErr) {
+ av_log(avctx, AV_LOG_WARNING, "frames_after property is not supported on this device. Ignoring.\n");
+ } else if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting frames_after property: %d\n", status);
+ }
+ }
+
+ if (avctx->sample_aspect_ratio.num != 0) {
+ CFNumberRef num;
+ CFNumberRef den;
+ CFMutableDictionaryRef par;
+ AVRational *avpar = &avctx->sample_aspect_ratio;
+
+ av_reduce(&avpar->num, &avpar->den,
+ avpar->num, avpar->den,
+ 0xFFFFFFFF);
+
+ num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberIntType,
+ &avpar->num);
+
+ den = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberIntType,
+ &avpar->den);
+
+
+
+ par = CFDictionaryCreateMutable(kCFAllocatorDefault,
+ 2,
+ &kCFCopyStringDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+
+ if (!par || !num || !den) {
+ if (par) CFRelease(par);
+ if (num) CFRelease(num);
+ if (den) CFRelease(den);
+
+ return AVERROR(ENOMEM);
+ }
+
+ CFDictionarySetValue(
+ par,
+ kCMFormatDescriptionKey_PixelAspectRatioHorizontalSpacing,
+ num);
+
+ CFDictionarySetValue(
+ par,
+ kCMFormatDescriptionKey_PixelAspectRatioVerticalSpacing,
+ den);
+
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_PixelAspectRatio,
+ par);
+
+ CFRelease(par);
+ CFRelease(num);
+ CFRelease(den);
+
+ if (status) {
+ av_log(avctx,
+ AV_LOG_ERROR,
+ "Error setting pixel aspect ratio to %d:%d: %d.\n",
+ avctx->sample_aspect_ratio.num,
+ avctx->sample_aspect_ratio.den,
+ status);
+
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+
+ if (vtctx->transfer_function) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_TransferFunction,
+ vtctx->transfer_function);
+
+ if (status) {
+ av_log(avctx, AV_LOG_WARNING, "Could not set transfer function: %d\n", status);
+ }
+ }
+
+
+ if (vtctx->ycbcr_matrix) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_YCbCrMatrix,
+ vtctx->ycbcr_matrix);
+
+ if (status) {
+ av_log(avctx, AV_LOG_WARNING, "Could not set ycbcr matrix: %d\n", status);
+ }
+ }
+
+
+ if (vtctx->color_primaries) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_ColorPrimaries,
+ vtctx->color_primaries);
+
+ if (status) {
+ av_log(avctx, AV_LOG_WARNING, "Could not set color primaries: %d\n", status);
+ }
+ }
+
+ if (gamma_level) {
+ status = VTSessionSetProperty(vtctx->session,
+ kCVImageBufferGammaLevelKey,
+ gamma_level);
+
+ if (status) {
+ av_log(avctx, AV_LOG_WARNING, "Could not set gamma level: %d\n", status);
+ }
+ }
+
+ if (!vtctx->has_b_frames) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_AllowFrameReordering,
+ kCFBooleanFalse);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting 'allow frame reordering' property: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+ if (vtctx->entropy != VT_ENTROPY_NOT_SET) {
+ CFStringRef entropy = vtctx->entropy == VT_CABAC ?
+ kVTH264EntropyMode_CABAC:
+ kVTH264EntropyMode_CAVLC;
+
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_H264EntropyMode,
+ entropy);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting entropy property: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+ if (vtctx->realtime) {
+ status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_RealTime,
+ kCFBooleanTrue);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
+ }
+ }
+
+ status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ return 0;
+}
+
+static av_cold int vtenc_init(AVCodecContext *avctx)
+{
+ CFMutableDictionaryRef enc_info;
+ CFMutableDictionaryRef pixel_buffer_info;
+ CMVideoCodecType codec_type;
+ VTEncContext *vtctx = avctx->priv_data;
+ CFStringRef profile_level;
+ CFBooleanRef has_b_frames_cfbool;
+ CFNumberRef gamma_level = NULL;
+ int status;
+
+ codec_type = get_cm_codec_type(avctx->codec_id);
+ if (!codec_type) {
+ av_log(avctx, AV_LOG_ERROR, "Error: no mapping for AVCodecID %d\n", avctx->codec_id);
+ return AVERROR(EINVAL);
+ }
+
+ vtctx->has_b_frames = avctx->max_b_frames > 0;
+ if(vtctx->has_b_frames && vtctx->profile == H264_PROF_BASELINE){
+ av_log(avctx, AV_LOG_WARNING, "Cannot use B-frames with baseline profile. Output will not contain B-frames.\n");
+ vtctx->has_b_frames = false;
+ }
+
+ if (vtctx->entropy == VT_CABAC && vtctx->profile == H264_PROF_BASELINE) {
+ av_log(avctx, AV_LOG_WARNING, "CABAC entropy requires 'main' or 'high' profile, but baseline was requested. Encode will not use CABAC entropy.\n");
+ vtctx->entropy = VT_ENTROPY_NOT_SET;
+ }
+
+ if (!get_vt_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
+
+ vtctx->session = NULL;
+
+ enc_info = CFDictionaryCreateMutable(
+ kCFAllocatorDefault,
+ 20,
+ &kCFCopyStringDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks
+ );
+
+ if (!enc_info) return AVERROR(ENOMEM);
+
+#if !TARGET_OS_IPHONE
+ if (!vtctx->allow_sw) {
+ CFDictionarySetValue(enc_info, kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder, kCFBooleanTrue);
+ } else {
+ CFDictionarySetValue(enc_info, kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder, kCFBooleanTrue);
+ }
+#endif
+
+ if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
+ status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
+ if (status)
+ goto init_cleanup;
+ } else {
+ pixel_buffer_info = NULL;
+ }
+
+ pthread_mutex_init(&vtctx->lock, NULL);
+ pthread_cond_init(&vtctx->cv_sample_sent, NULL);
+ vtctx->dts_delta = vtctx->has_b_frames ? -1 : 0;
+
+ get_cv_transfer_function(avctx, &vtctx->transfer_function, &gamma_level);
+ get_cv_ycbcr_matrix(avctx, &vtctx->ycbcr_matrix);
+ get_cv_color_primaries(avctx, &vtctx->color_primaries);
+
+
+ if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
+ status = vtenc_populate_extradata(avctx,
+ codec_type,
+ profile_level,
+ gamma_level,
+ enc_info,
+ pixel_buffer_info);
+ if (status)
+ goto init_cleanup;
+ }
+
+ status = vtenc_create_encoder(avctx,
+ codec_type,
+ profile_level,
+ gamma_level,
+ enc_info,
+ pixel_buffer_info,
+ &vtctx->session);
+
+ if (status < 0)
+ goto init_cleanup;
+
+ status = VTSessionCopyProperty(vtctx->session,
+ kVTCompressionPropertyKey_AllowFrameReordering,
+ kCFAllocatorDefault,
+ &has_b_frames_cfbool);
+
+ if (!status) {
+ //Some devices don't output B-frames for main profile, even if requested.
+ vtctx->has_b_frames = CFBooleanGetValue(has_b_frames_cfbool);
+ CFRelease(has_b_frames_cfbool);
+ }
+ avctx->has_b_frames = vtctx->has_b_frames;
+
+init_cleanup:
+ if (gamma_level)
+ CFRelease(gamma_level);
+
+ if (pixel_buffer_info)
+ CFRelease(pixel_buffer_info);
+
+ CFRelease(enc_info);
+
+ return status;
+}
+
+static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
+{
+ CFArrayRef attachments;
+ CFDictionaryRef attachment;
+ CFBooleanRef not_sync;
+ CFIndex len;
+
+ attachments = CMSampleBufferGetSampleAttachmentsArray(buffer, false);
+ len = !attachments ? 0 : CFArrayGetCount(attachments);
+
+ if (!len) {
+ *is_key_frame = true;
+ return;
+ }
+
+ attachment = CFArrayGetValueAtIndex(attachments, 0);
+
+ if (CFDictionaryGetValueIfPresent(attachment,
+ kCMSampleAttachmentKey_NotSync,
+ (const void **)&not_sync))
+ {
+ *is_key_frame = !CFBooleanGetValue(not_sync);
+ } else {
+ *is_key_frame = true;
+ }
+}
+
+/**
+ * Copies NAL units and replaces length codes with
+ * H.264 Annex B start codes. On failure, the contents of
+ * dst_data may have been modified.
+ *
+ * @param length_code_size Byte length of each length code
+ * @param src_data NAL units prefixed with length codes.
+ * @param src_size Length of buffer, excluding any padding.
+ * @param dst_data Must be zeroed before calling this function.
+ * Contains the copied NAL units prefixed with
+ * start codes when the function returns
+ * successfully.
+ * @param dst_size Length of dst_data
+ * @return 0 on success
+ * AVERROR_INVALIDDATA if length_code_size is invalid
+ * AVERROR_BUFFER_TOO_SMALL if dst_data is too small
+ * or if a length_code in src_data specifies data beyond
+ * the end of its buffer.
+ */
+static int copy_replace_length_codes(
+ AVCodecContext *avctx,
+ size_t length_code_size,
+ CMSampleBufferRef sample_buffer,
+ uint8_t *dst_data,
+ size_t dst_size)
+{
+ size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
+ size_t remaining_src_size = src_size;
+ size_t remaining_dst_size = dst_size;
+ size_t src_offset = 0;
+ int status;
+ uint8_t size_buf[4];
+ CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
+
+ if (length_code_size > 4) {
+ return AVERROR_INVALIDDATA;
+ }
+
+ while (remaining_src_size > 0) {
+ size_t curr_src_len;
+ size_t curr_dst_len;
+ size_t box_len = 0;
+ size_t i;
+
+ uint8_t *dst_box;
+
+ status = CMBlockBufferCopyDataBytes(block,
+ src_offset,
+ length_code_size,
+ size_buf);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Cannot copy length: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ for (i = 0; i < length_code_size; i++) {
+ box_len <<= 8;
+ box_len |= size_buf[i];
+ }
+
+ curr_src_len = box_len + length_code_size;
+ curr_dst_len = box_len + sizeof(start_code);
+
+ if (remaining_src_size < curr_src_len) {
+ return AVERROR_BUFFER_TOO_SMALL;
+ }
+
+ if (remaining_dst_size < curr_dst_len) {
+ return AVERROR_BUFFER_TOO_SMALL;
+ }
+
+ dst_box = dst_data + sizeof(start_code);
+
+ memcpy(dst_data, start_code, sizeof(start_code));
+ status = CMBlockBufferCopyDataBytes(block,
+ src_offset + length_code_size,
+ box_len,
+ dst_box);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Cannot copy data: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ src_offset += curr_src_len;
+ dst_data += curr_dst_len;
+
+ remaining_src_size -= curr_src_len;
+ remaining_dst_size -= curr_dst_len;
+ }
+
+ return 0;
+}
+
+static int vtenc_cm_to_avpacket(
+ AVCodecContext *avctx,
+ CMSampleBufferRef sample_buffer,
+ AVPacket *pkt)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+
+ int status;
+ bool is_key_frame;
+ bool add_header;
+ size_t length_code_size;
+ size_t header_size = 0;
+ size_t in_buf_size;
+ size_t out_buf_size;
+ int64_t dts_delta;
+ int64_t time_base_num;
+ int nalu_count;
+ CMTime pts;
+ CMTime dts;
+ CMVideoFormatDescriptionRef vid_fmt;
+
+
+ vtenc_get_frame_info(sample_buffer, &is_key_frame);
+ status = get_length_code_size(avctx, sample_buffer, &length_code_size);
+ if (status) return status;
+
+ add_header = is_key_frame && !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
+
+ if (add_header) {
+ vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
+ if (!vid_fmt) {
+ av_log(avctx, AV_LOG_ERROR, "Cannot get format description.\n");
+ return AVERROR_EXTERNAL;
+ }
+
+ int status = get_params_size(avctx, vid_fmt, &header_size);
+ if (status) return status;
+ }
+
+ status = count_nalus(length_code_size, sample_buffer, &nalu_count);
+ if(status)
+ return status;
+
+ in_buf_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
+ out_buf_size = header_size +
+ in_buf_size +
+ nalu_count * ((int)sizeof(start_code) - (int)length_code_size);
+
+ status = ff_alloc_packet2(avctx, pkt, out_buf_size, out_buf_size);
+ if (status < 0)
+ return status;
+
+ if (add_header) {
+ status = copy_param_sets(avctx, vid_fmt, pkt->data, out_buf_size);
+ if(status) return status;
+ }
+
+ status = copy_replace_length_codes(
+ avctx,
+ length_code_size,
+ sample_buffer,
+ pkt->data + header_size,
+ pkt->size - header_size
+ );
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d", status);
+ return status;
+ }
+
+ if (is_key_frame) {
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ }
+
+ pts = CMSampleBufferGetPresentationTimeStamp(sample_buffer);
+ dts = CMSampleBufferGetDecodeTimeStamp (sample_buffer);
+
+ if (CMTIME_IS_INVALID(dts)) {
+ if (!vtctx->has_b_frames) {
+ dts = pts;
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "DTS is invalid.\n");
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+ dts_delta = vtctx->dts_delta >= 0 ? vtctx->dts_delta : 0;
+ time_base_num = avctx->time_base.num;
+ pkt->pts = pts.value / time_base_num;
+ pkt->dts = dts.value / time_base_num - dts_delta;
+ pkt->size = out_buf_size;
+
+ return 0;
+}
+
+/*
+ * contiguous_buf_size is 0 if not contiguous, and the size of the buffer
+ * containing all planes if so.
+ */
+static int get_cv_pixel_info(
+ AVCodecContext *avctx,
+ const AVFrame *frame,
+ int *color,
+ int *plane_count,
+ size_t *widths,
+ size_t *heights,
+ size_t *strides,
+ size_t *contiguous_buf_size)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+ int av_format = frame->format;
+ int av_color_range = av_frame_get_color_range(frame);
+ int i;
+ int range_guessed;
+ int status;
+
+ status = get_cv_pixel_format(avctx, av_format, av_color_range, color, &range_guessed);
+ if (status) {
+ av_log(avctx,
+ AV_LOG_ERROR,
+ "Could not get pixel format for color format '%s' range '%s'.\n",
+ av_get_pix_fmt_name(av_format),
+ av_color_range > AVCOL_RANGE_UNSPECIFIED &&
+ av_color_range < AVCOL_RANGE_NB ?
+ av_color_range_name(av_color_range) :
+ "Unknown");
+
+ return AVERROR(EINVAL);
+ }
+
+ if (range_guessed) {
+ if (!vtctx->warned_color_range) {
+ vtctx->warned_color_range = true;
+ av_log(avctx,
+ AV_LOG_WARNING,
+ "Color range not set for %s. Using MPEG range.\n",
+ av_get_pix_fmt_name(av_format));
+ }
+
+ av_log(avctx, AV_LOG_WARNING, "");
+ }
+
+ switch (av_format) {
+ case AV_PIX_FMT_NV12:
+ *plane_count = 2;
+
+ widths [0] = avctx->width;
+ heights[0] = avctx->height;
+ strides[0] = frame ? frame->linesize[0] : avctx->width;
+
+ widths [1] = (avctx->width + 1) / 2;
+ heights[1] = (avctx->height + 1) / 2;
+ strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) & -2;
+ break;
+
+ case AV_PIX_FMT_YUV420P:
+ *plane_count = 3;
+
+ widths [0] = avctx->width;
+ heights[0] = avctx->height;
+ strides[0] = frame ? frame->linesize[0] : avctx->width;
+
+ widths [1] = (avctx->width + 1) / 2;
+ heights[1] = (avctx->height + 1) / 2;
+ strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) / 2;
+
+ widths [2] = (avctx->width + 1) / 2;
+ heights[2] = (avctx->height + 1) / 2;
+ strides[2] = frame ? frame->linesize[2] : (avctx->width + 1) / 2;
+ break;
+
+ default:
+ av_log(
+ avctx,
+ AV_LOG_ERROR,
+ "Could not get frame format info for color %d range %d.\n",
+ av_format,
+ av_color_range);
+
+ return AVERROR(EINVAL);
+ }
+
+ *contiguous_buf_size = 0;
+ for (i = 0; i < *plane_count; i++) {
+ if (i < *plane_count - 1 &&
+ frame->data[i] + strides[i] * heights[i] != frame->data[i + 1]) {
+ *contiguous_buf_size = 0;
+ break;
+ }
+
+ *contiguous_buf_size += strides[i] * heights[i];
+ }
+
+ return 0;
+}
+
+#if !TARGET_OS_IPHONE
+//Not used on iOS - frame is always copied.
+static void free_avframe(
+ void *release_ctx,
+ const void *data,
+ size_t size,
+ size_t plane_count,
+ const void *plane_addresses[])
+{
+ AVFrame *frame = release_ctx;
+ av_frame_free(&frame);
+}
+#else
+//Not used on OSX - frame is never copied.
+static int copy_avframe_to_pixel_buffer(AVCodecContext *avctx,
+ const AVFrame *frame,
+ CVPixelBufferRef cv_img,
+ const size_t *plane_strides,
+ const size_t *plane_rows)
+{
+ int i, j;
+ size_t plane_count;
+ int status;
+ int rows;
+ int src_stride;
+ int dst_stride;
+ uint8_t *src_addr;
+ uint8_t *dst_addr;
+ size_t copy_bytes;
+
+ status = CVPixelBufferLockBaseAddress(cv_img, 0);
+ if (status) {
+ av_log(
+ avctx,
+ AV_LOG_ERROR,
+ "Error: Could not lock base address of CVPixelBuffer: %d.\n",
+ status
+ );
+ }
+
+ if (CVPixelBufferIsPlanar(cv_img)) {
+ plane_count = CVPixelBufferGetPlaneCount(cv_img);
+ for (i = 0; frame->data[i]; i++) {
+ if (i == plane_count) {
+ CVPixelBufferUnlockBaseAddress(cv_img, 0);
+ av_log(avctx,
+ AV_LOG_ERROR,
+ "Error: different number of planes in AVFrame and CVPixelBuffer.\n"
+ );
+
+ return AVERROR_EXTERNAL;
+ }
+
+ dst_addr = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(cv_img, i);
+ src_addr = (uint8_t*)frame->data[i];
+ dst_stride = CVPixelBufferGetBytesPerRowOfPlane(cv_img, i);
+ src_stride = plane_strides[i];
+ rows = plane_rows[i];
+
+ if (dst_stride == src_stride) {
+ memcpy(dst_addr, src_addr, src_stride * rows);
+ } else {
+ copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
+
+ for (j = 0; j < rows; j++) {
+ memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
+ }
+ }
+ }
+ } else {
+ if (frame->data[1]) {
+ CVPixelBufferUnlockBaseAddress(cv_img, 0);
+ av_log(avctx,
+ AV_LOG_ERROR,
+ "Error: different number of planes in AVFrame and non-planar CVPixelBuffer.\n"
+ );
+
+ return AVERROR_EXTERNAL;
+ }
+
+ dst_addr = (uint8_t*)CVPixelBufferGetBaseAddress(cv_img);
+ src_addr = (uint8_t*)frame->data[0];
+ dst_stride = CVPixelBufferGetBytesPerRow(cv_img);
+ src_stride = plane_strides[0];
+ rows = plane_rows[0];
+
+ if (dst_stride == src_stride) {
+ memcpy(dst_addr, src_addr, src_stride * rows);
+ } else {
+ copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
+
+ for (j = 0; j < rows; j++) {
+ memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
+ }
+ }
+ }
+
+ status = CVPixelBufferUnlockBaseAddress(cv_img, 0);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error: Could not unlock CVPixelBuffer base address: %d.\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ return 0;
+}
+#endif //!TARGET_OS_IPHONE
+
+static int create_cv_pixel_buffer(AVCodecContext *avctx,
+ const AVFrame *frame,
+ CVPixelBufferRef *cv_img)
+{
+ int plane_count;
+ int color;
+ size_t widths [AV_NUM_DATA_POINTERS];
+ size_t heights[AV_NUM_DATA_POINTERS];
+ size_t strides[AV_NUM_DATA_POINTERS];
+ int status;
+ size_t contiguous_buf_size;
+#if TARGET_OS_IPHONE
+ CVPixelBufferPoolRef pix_buf_pool;
+ VTEncContext* vtctx = avctx->priv_data;
+#else
+ CFMutableDictionaryRef pix_buf_attachments = CFDictionaryCreateMutable(
+ kCFAllocatorDefault,
+ 10,
+ &kCFCopyStringDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+
+ if (!pix_buf_attachments) return AVERROR(ENOMEM);
+#endif
+
+ if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
+ av_assert0(frame->format == AV_PIX_FMT_VIDEOTOOLBOX);
+
+ *cv_img = (CVPixelBufferRef)frame->data[3];
+ av_assert0(*cv_img);
+
+ CFRetain(*cv_img);
+ return 0;
+ }
+
+ memset(widths, 0, sizeof(widths));
+ memset(heights, 0, sizeof(heights));
+ memset(strides, 0, sizeof(strides));
+
+ status = get_cv_pixel_info(
+ avctx,
+ frame,
+ &color,
+ &plane_count,
+ widths,
+ heights,
+ strides,
+ &contiguous_buf_size
+ );
+
+ if (status) {
+ av_log(
+ avctx,
+ AV_LOG_ERROR,
+ "Error: Cannot convert format %d color_range %d: %d\n",
+ frame->format,
+ av_frame_get_color_range(frame),
+ status
+ );
+
+ return AVERROR_EXTERNAL;
+ }
+
+#if TARGET_OS_IPHONE
+ pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
+ if (!pix_buf_pool) {
+ av_log(avctx, AV_LOG_ERROR, "Could not get pixel buffer pool.\n");
+ return AVERROR_EXTERNAL;
+ }
+
+ status = CVPixelBufferPoolCreatePixelBuffer(NULL,
+ pix_buf_pool,
+ cv_img);
+
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Could not create pixel buffer from pool: %d.\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ status = copy_avframe_to_pixel_buffer(avctx, frame, *cv_img, strides, heights);
+ if (status) {
+ CFRelease(*cv_img);
+ *cv_img = NULL;
+ return status;
+ }
+#else
+ AVFrame *enc_frame = av_frame_alloc();
+ if (!enc_frame) return AVERROR(ENOMEM);
+
+ status = av_frame_ref(enc_frame, frame);
+ if (status) {
+ av_frame_free(&enc_frame);
+ return status;
+ }
+
+ status = CVPixelBufferCreateWithPlanarBytes(
+ kCFAllocatorDefault,
+ enc_frame->width,
+ enc_frame->height,
+ color,
+ NULL,
+ contiguous_buf_size,
+ plane_count,
+ (void **)enc_frame->data,
+ widths,
+ heights,
+ strides,
+ free_avframe,
+ enc_frame,
+ NULL,
+ cv_img
+ );
+
+ add_color_attr(avctx, pix_buf_attachments);
+ CVBufferSetAttachments(*cv_img, pix_buf_attachments, kCVAttachmentMode_ShouldPropagate);
+ CFRelease(pix_buf_attachments);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error: Could not create CVPixelBuffer: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+#endif
+
+ return 0;
+}
+
+static int create_encoder_dict_h264(const AVFrame *frame,
+ CFDictionaryRef* dict_out)
+{
+ CFDictionaryRef dict = NULL;
+ if (frame->pict_type == AV_PICTURE_TYPE_I) {
+ const void *keys[] = { kVTEncodeFrameOptionKey_ForceKeyFrame };
+ const void *vals[] = { kCFBooleanTrue };
+
+ dict = CFDictionaryCreate(NULL, keys, vals, 1, NULL, NULL);
+ if(!dict) return AVERROR(ENOMEM);
+ }
+
+ *dict_out = dict;
+ return 0;
+}
+
+static int vtenc_send_frame(AVCodecContext *avctx,
+ VTEncContext *vtctx,
+ const AVFrame *frame)
+{
+ CMTime time;
+ CFDictionaryRef frame_dict;
+ CVPixelBufferRef cv_img = NULL;
+ int status = create_cv_pixel_buffer(avctx, frame, &cv_img);
+
+ if (status) return status;
+
+ status = create_encoder_dict_h264(frame, &frame_dict);
+ if (status) {
+ CFRelease(cv_img);
+ return status;
+ }
+
+ time = CMTimeMake(frame->pts * avctx->time_base.num, avctx->time_base.den);
+ status = VTCompressionSessionEncodeFrame(
+ vtctx->session,
+ cv_img,
+ time,
+ kCMTimeInvalid,
+ frame_dict,
+ NULL,
+ NULL
+ );
+
+ if (frame_dict) CFRelease(frame_dict);
+ CFRelease(cv_img);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error: cannot encode frame: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ return 0;
+}
+
+static av_cold int vtenc_frame(
+ AVCodecContext *avctx,
+ AVPacket *pkt,
+ const AVFrame *frame,
+ int *got_packet)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+ bool get_frame;
+ int status;
+ CMSampleBufferRef buf = NULL;
+
+ if (frame) {
+ status = vtenc_send_frame(avctx, vtctx, frame);
+
+ if (status) {
+ status = AVERROR_EXTERNAL;
+ goto end_nopkt;
+ }
+
+ if (vtctx->frame_ct_in == 0) {
+ vtctx->first_pts = frame->pts;
+ } else if(vtctx->frame_ct_in == 1 && vtctx->has_b_frames) {
+ vtctx->dts_delta = frame->pts - vtctx->first_pts;
+ }
+
+ vtctx->frame_ct_in++;
+ } else if(!vtctx->flushing) {
+ vtctx->flushing = true;
+
+ status = VTCompressionSessionCompleteFrames(vtctx->session,
+ kCMTimeIndefinite);
+
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error flushing frames: %d\n", status);
+ status = AVERROR_EXTERNAL;
+ goto end_nopkt;
+ }
+ }
+
+ *got_packet = 0;
+ get_frame = vtctx->dts_delta >= 0 || !frame;
+ if (!get_frame) {
+ status = 0;
+ goto end_nopkt;
+ }
+
+ status = vtenc_q_pop(vtctx, !frame, &buf);
+ if (status) goto end_nopkt;
+ if (!buf) goto end_nopkt;
+
+ status = vtenc_cm_to_avpacket(avctx, buf, pkt);
+ CFRelease(buf);
+ if (status) goto end_nopkt;
+
+ *got_packet = 1;
+ return 0;
+
+end_nopkt:
+ av_packet_unref(pkt);
+ return status;
+}
+
+static int vtenc_populate_extradata(AVCodecContext *avctx,
+ CMVideoCodecType codec_type,
+ CFStringRef profile_level,
+ CFNumberRef gamma_level,
+ CFDictionaryRef enc_info,
+ CFDictionaryRef pixel_buffer_info)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+ AVFrame *frame = av_frame_alloc();
+ int y_size = avctx->width * avctx->height;
+ int chroma_size = (avctx->width / 2) * (avctx->height / 2);
+ CMSampleBufferRef buf = NULL;
+ int status;
+
+ if (!frame)
+ return AVERROR(ENOMEM);
+
+ frame->buf[0] = av_buffer_alloc(y_size + 2 * chroma_size);
+
+ if(!frame->buf[0]){
+ status = AVERROR(ENOMEM);
+ goto pe_cleanup;
+ }
+
+ status = vtenc_create_encoder(avctx,
+ codec_type,
+ profile_level,
+ gamma_level,
+ enc_info,
+ pixel_buffer_info,
+ &vtctx->session);
+ if (status)
+ goto pe_cleanup;
+
+ frame->data[0] = frame->buf[0]->data;
+ memset(frame->data[0], 0, y_size);
+
+ frame->data[1] = frame->buf[0]->data + y_size;
+ memset(frame->data[1], 128, chroma_size);
+
+
+ if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
+ frame->data[2] = frame->buf[0]->data + y_size + chroma_size;
+ memset(frame->data[2], 128, chroma_size);
+ }
+
+ frame->linesize[0] = avctx->width;
+
+ if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
+ frame->linesize[1] =
+ frame->linesize[2] = (avctx->width + 1) / 2;
+ } else {
+ frame->linesize[1] = (avctx->width + 1) / 2;
+ }
+
+ frame->format = avctx->pix_fmt;
+ frame->width = avctx->width;
+ frame->height = avctx->height;
+ av_frame_set_colorspace(frame, avctx->colorspace);
+ av_frame_set_color_range(frame, avctx->color_range);
+ frame->color_trc = avctx->color_trc;
+ frame->color_primaries = avctx->color_primaries;
+
+ frame->pts = 0;
+ status = vtenc_send_frame(avctx, vtctx, frame);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error sending frame: %d\n", status);
+ goto pe_cleanup;
+ }
+
+ //Populates extradata - output frames are flushed and param sets are available.
+ status = VTCompressionSessionCompleteFrames(vtctx->session,
+ kCMTimeIndefinite);
+
+ if (status)
+ goto pe_cleanup;
+
+ status = vtenc_q_pop(vtctx, 0, &buf);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "popping: %d\n", status);
+ goto pe_cleanup;
+ }
+
+ CFRelease(buf);
+
+
+
+pe_cleanup:
+ if(vtctx->session)
+ CFRelease(vtctx->session);
+
+ vtctx->session = NULL;
+ vtctx->frame_ct_out = 0;
+
+ av_frame_unref(frame);
+ av_frame_free(&frame);
+
+ av_assert0(status != 0 || (avctx->extradata && avctx->extradata_size > 0));
+
+ return status;
+}
+
+static av_cold int vtenc_close(AVCodecContext *avctx)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+
+ if(!vtctx->session) return 0;
+
+ pthread_cond_destroy(&vtctx->cv_sample_sent);
+ pthread_mutex_destroy(&vtctx->lock);
+ CFRelease(vtctx->session);
+ vtctx->session = NULL;
+
+ if (vtctx->color_primaries) {
+ CFRelease(vtctx->color_primaries);
+ vtctx->color_primaries = NULL;
+ }
+
+ if (vtctx->transfer_function) {
+ CFRelease(vtctx->transfer_function);
+ vtctx->transfer_function = NULL;
+ }
+
+ if (vtctx->ycbcr_matrix) {
+ CFRelease(vtctx->ycbcr_matrix);
+ vtctx->ycbcr_matrix = NULL;
+ }
+
+ return 0;
+}
+
+static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_VIDEOTOOLBOX,
+ AV_PIX_FMT_NV12,
+ AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_NONE
+};
+
+#define OFFSET(x) offsetof(VTEncContext, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = H264_PROF_AUTO }, H264_PROF_AUTO, H264_PROF_COUNT, VE, "profile" },
+ { "baseline", "Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_BASELINE }, INT_MIN, INT_MAX, VE, "profile" },
+ { "main", "Main Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
+ { "high", "High Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_HIGH }, INT_MIN, INT_MAX, VE, "profile" },
+
+ { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, "level" },
+ { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, "level" },
+ { "3.0", "Level 3.0", 0, AV_OPT_TYPE_CONST, { .i64 = 30 }, INT_MIN, INT_MAX, VE, "level" },
+ { "3.1", "Level 3.1", 0, AV_OPT_TYPE_CONST, { .i64 = 31 }, INT_MIN, INT_MAX, VE, "level" },
+ { "3.2", "Level 3.2", 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, INT_MIN, INT_MAX, VE, "level" },
+ { "4.0", "Level 4.0", 0, AV_OPT_TYPE_CONST, { .i64 = 40 }, INT_MIN, INT_MAX, VE, "level" },
+ { "4.1", "Level 4.1", 0, AV_OPT_TYPE_CONST, { .i64 = 41 }, INT_MIN, INT_MAX, VE, "level" },
+ { "4.2", "Level 4.2", 0, AV_OPT_TYPE_CONST, { .i64 = 42 }, INT_MIN, INT_MAX, VE, "level" },
+ { "5.0", "Level 5.0", 0, AV_OPT_TYPE_CONST, { .i64 = 50 }, INT_MIN, INT_MAX, VE, "level" },
+ { "5.1", "Level 5.1", 0, AV_OPT_TYPE_CONST, { .i64 = 51 }, INT_MIN, INT_MAX, VE, "level" },
+ { "5.2", "Level 5.2", 0, AV_OPT_TYPE_CONST, { .i64 = 52 }, INT_MIN, INT_MAX, VE, "level" },
+
+ { "allow_sw", "Allow software encoding", OFFSET(allow_sw), AV_OPT_TYPE_BOOL,
+ { .i64 = 0 }, 0, 1, VE },
+
+ { "coder", "Entropy coding", OFFSET(entropy), AV_OPT_TYPE_INT, { .i64 = VT_ENTROPY_NOT_SET }, VT_ENTROPY_NOT_SET, VT_CABAC, VE, "coder" },
+ { "cavlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
+ { "vlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
+ { "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
+ { "ac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
+
+ { "realtime", "Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).",
+ OFFSET(realtime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
+
+ { "frames_before", "Other frames will come before the frames in this session. This helps smooth concatenation issues.",
+ OFFSET(frames_before), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
+ { "frames_after", "Other frames will come after the frames in this session. This helps smooth concatenation issues.",
+ OFFSET(frames_after), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
+
+ { NULL },
+};
+
+static const AVClass h264_videotoolbox_class = {
+ .class_name = "h264_videotoolbox",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_h264_videotoolbox_encoder = {
+ .name = "h264_videotoolbox",
+ .long_name = NULL_IF_CONFIG_SMALL("VideoToolbox H.264 Encoder"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_H264,
+ .priv_data_size = sizeof(VTEncContext),
+ .pix_fmts = pix_fmts,
+ .init = vtenc_init,
+ .encode2 = vtenc_frame,
+ .close = vtenc_close,
+ .capabilities = AV_CODEC_CAP_DELAY,
+ .priv_class = &h264_videotoolbox_class,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
+ FF_CODEC_CAP_INIT_CLEANUP,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 11:47:37 +0000