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https://github.com/FFmpeg/FFmpeg.git
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flvenc: K&R formatting cosmetics
This commit is contained in:
Luca Barbato
Diego Biurrun
parent
a112822597
commit
1cb34ea4fe
@ -19,41 +19,41 @@
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/dict.h"
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#include "libavutil/intfloat.h"
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#include "avc.h"
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#include "avformat.h"
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#include "flv.h"
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#include "internal.h"
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#include "avc.h"
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#include "metadata.h"
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#include "libavutil/dict.h"
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#undef NDEBUG
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#include <assert.h>
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static const AVCodecTag flv_video_codec_ids[] = {
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{CODEC_ID_FLV1, FLV_CODECID_H263 },
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{CODEC_ID_FLASHSV, FLV_CODECID_SCREEN},
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{CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2},
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{CODEC_ID_VP6F, FLV_CODECID_VP6 },
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{CODEC_ID_VP6, FLV_CODECID_VP6 },
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{CODEC_ID_H264, FLV_CODECID_H264 },
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{CODEC_ID_NONE, 0}
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{ CODEC_ID_FLV1, FLV_CODECID_H263 },
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{ CODEC_ID_FLASHSV, FLV_CODECID_SCREEN },
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{ CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2 },
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{ CODEC_ID_VP6F, FLV_CODECID_VP6 },
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{ CODEC_ID_VP6, FLV_CODECID_VP6 },
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{ CODEC_ID_H264, FLV_CODECID_H264 },
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{ CODEC_ID_NONE, 0 }
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};
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static const AVCodecTag flv_audio_codec_ids[] = {
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{CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_AAC, FLV_CODECID_AAC >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_SPEEX, FLV_CODECID_SPEEX >> FLV_AUDIO_CODECID_OFFSET},
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{CODEC_ID_NONE, 0}
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{ CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_AAC, FLV_CODECID_AAC >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_SPEEX, FLV_CODECID_SPEEX >> FLV_AUDIO_CODECID_OFFSET },
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{ CODEC_ID_NONE, 0 }
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};
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typedef struct FLVContext {
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int reserved;
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int reserved;
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int64_t duration_offset;
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int64_t filesize_offset;
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int64_t duration;
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@ -66,13 +66,16 @@ typedef struct FLVStreamContext {
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static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
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{
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int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
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int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT
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: FLV_SAMPLESSIZE_8BIT;
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if (enc->codec_id == CODEC_ID_AAC) // specs force these parameters
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return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
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return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ |
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FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
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else if (enc->codec_id == CODEC_ID_SPEEX) {
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if (enc->sample_rate != 16000) {
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av_log(s, AV_LOG_ERROR, "flv only supports wideband (16kHz) Speex audio\n");
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av_log(s, AV_LOG_ERROR,
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"flv only supports wideband (16kHz) Speex audio\n");
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return -1;
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}
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if (enc->channels != 1) {
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@ -81,34 +84,35 @@ static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
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}
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return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT;
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} else {
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switch (enc->sample_rate) {
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case 44100:
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switch (enc->sample_rate) {
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case 44100:
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flags |= FLV_SAMPLERATE_44100HZ;
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break;
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case 22050:
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case 22050:
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flags |= FLV_SAMPLERATE_22050HZ;
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break;
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case 11025:
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case 11025:
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flags |= FLV_SAMPLERATE_11025HZ;
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break;
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case 16000: //nellymoser only
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case 8000: //nellymoser only
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case 5512: //not mp3
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if(enc->codec_id != CODEC_ID_MP3){
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case 16000: // nellymoser only
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case 8000: // nellymoser only
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case 5512: // not MP3
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if (enc->codec_id != CODEC_ID_MP3) {
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flags |= FLV_SAMPLERATE_SPECIAL;
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break;
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}
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default:
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av_log(s, AV_LOG_ERROR, "flv does not support that sample rate, choose from (44100, 22050, 11025).\n");
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av_log(s, AV_LOG_ERROR,
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"flv does not support that sample rate, "
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"choose from (44100, 22050, 11025).\n");
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return -1;
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}
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}
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}
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if (enc->channels > 1) {
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if (enc->channels > 1)
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flags |= FLV_STEREO;
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}
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switch(enc->codec_id){
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switch (enc->codec_id) {
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case CODEC_ID_MP3:
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flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
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break;
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@ -122,19 +126,18 @@ static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
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flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT;
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break;
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case CODEC_ID_ADPCM_SWF:
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flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
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flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
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break;
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case CODEC_ID_NELLYMOSER:
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if (enc->sample_rate == 8000) {
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flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
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} else if (enc->sample_rate == 16000) {
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if (enc->sample_rate == 8000)
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flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
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else if (enc->sample_rate == 16000)
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flags |= FLV_CODECID_NELLYMOSER_16KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
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} else {
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flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
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}
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else
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flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
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break;
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case 0:
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flags |= enc->codec_tag<<4;
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flags |= enc->codec_tag << 4;
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break;
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default:
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av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
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@ -151,16 +154,17 @@ static void put_amf_string(AVIOContext *pb, const char *str)
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avio_write(pb, str, len);
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}
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static void put_avc_eos_tag(AVIOContext *pb, unsigned ts) {
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static void put_avc_eos_tag(AVIOContext *pb, unsigned ts)
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{
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avio_w8(pb, FLV_TAG_TYPE_VIDEO);
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avio_wb24(pb, 5); /* Tag Data Size */
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avio_wb24(pb, ts); /* lower 24 bits of timestamp in ms*/
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avio_w8(pb, (ts >> 24) & 0x7F); /* MSB of ts in ms*/
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avio_wb24(pb, 0); /* StreamId = 0 */
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avio_w8(pb, 23); /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
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avio_w8(pb, 2); /* AVC end of sequence */
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avio_wb24(pb, 0); /* Always 0 for AVC EOS. */
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avio_wb32(pb, 16); /* Size of FLV tag */
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avio_wb24(pb, 5); /* Tag Data Size */
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avio_wb24(pb, ts); /* lower 24 bits of timestamp in ms */
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avio_w8(pb, (ts >> 24) & 0x7F); /* MSB of ts in ms */
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avio_wb24(pb, 0); /* StreamId = 0 */
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avio_w8(pb, 23); /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
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avio_w8(pb, 2); /* AVC end of sequence */
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avio_wb24(pb, 0); /* Always 0 for AVC EOS. */
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avio_wb32(pb, 16); /* Size of FLV tag */
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}
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static void put_amf_double(AVIOContext *pb, double d)
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@ -169,7 +173,8 @@ static void put_amf_double(AVIOContext *pb, double d)
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avio_wb64(pb, av_double2int(d));
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}
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static void put_amf_bool(AVIOContext *pb, int b) {
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static void put_amf_bool(AVIOContext *pb, int b)
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{
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avio_w8(pb, AMF_DATA_TYPE_BOOL);
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avio_w8(pb, !!b);
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}
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@ -184,18 +189,19 @@ static int flv_write_header(AVFormatContext *s)
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int64_t metadata_size_pos, data_size, metadata_count_pos;
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AVDictionaryEntry *tag = NULL;
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for(i=0; i<s->nb_streams; i++){
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for (i = 0; i < s->nb_streams; i++) {
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AVCodecContext *enc = s->streams[i]->codec;
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FLVStreamContext *sc;
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switch (enc->codec_type) {
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case AVMEDIA_TYPE_VIDEO:
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if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) {
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if (s->streams[i]->r_frame_rate.den &&
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s->streams[i]->r_frame_rate.num) {
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framerate = av_q2d(s->streams[i]->r_frame_rate);
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} else {
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framerate = 1/av_q2d(s->streams[i]->codec->time_base);
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framerate = 1 / av_q2d(s->streams[i]->codec->time_base);
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}
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video_enc = enc;
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if(enc->codec_tag == 0) {
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if (enc->codec_tag == 0) {
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av_log(s, AV_LOG_ERROR, "video codec not compatible with flv\n");
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return -1;
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}
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@ -224,32 +230,32 @@ static int flv_write_header(AVFormatContext *s)
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s->streams[i]->priv_data = sc;
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sc->last_ts = -1;
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}
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flv->delay = AV_NOPTS_VALUE;
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avio_write(pb, "FLV", 3);
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avio_w8(pb,1);
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avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
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+ FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
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avio_wb32(pb,9);
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avio_wb32(pb,0);
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avio_w8(pb, 1);
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avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc +
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FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
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avio_wb32(pb, 9);
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avio_wb32(pb, 0);
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for(i=0; i<s->nb_streams; i++){
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if(s->streams[i]->codec->codec_tag == 5){
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avio_w8(pb,8); // message type
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avio_wb24(pb,0); // include flags
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avio_wb24(pb,0); // time stamp
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avio_wb32(pb,0); // reserved
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avio_wb32(pb,11); // size
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flv->reserved=5;
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for (i = 0; i < s->nb_streams; i++)
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if (s->streams[i]->codec->codec_tag == 5) {
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avio_w8(pb, 8); // message type
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avio_wb24(pb, 0); // include flags
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avio_wb24(pb, 0); // time stamp
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avio_wb32(pb, 0); // reserved
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avio_wb32(pb, 11); // size
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flv->reserved = 5;
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}
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}
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/* write meta_tag */
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avio_w8(pb, 18); // tag type META
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metadata_size_pos= avio_tell(pb);
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avio_wb24(pb, 0); // size of data part (sum of all parts below)
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avio_wb24(pb, 0); // time stamp
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avio_wb32(pb, 0); // reserved
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avio_w8(pb, 18); // tag type META
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metadata_size_pos = avio_tell(pb);
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avio_wb24(pb, 0); // size of data part (sum of all parts below)
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avio_wb24(pb, 0); // timestamp
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avio_wb32(pb, 0); // reserved
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/* now data of data_size size */
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@ -262,16 +268,18 @@ static int flv_write_header(AVFormatContext *s)
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metadata_count_pos = avio_tell(pb);
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metadata_count = 5 * !!video_enc +
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5 * !!audio_enc +
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1 * !!data_enc +
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1 * !!data_enc +
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2; // +2 for duration and file size
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avio_wb32(pb, metadata_count);
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put_amf_string(pb, "duration");
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flv->duration_offset= avio_tell(pb);
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put_amf_double(pb, s->duration / AV_TIME_BASE); // fill in the guessed duration, it'll be corrected later if incorrect
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if(video_enc){
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// fill in the guessed duration, it'll be corrected later if incorrect
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put_amf_double(pb, s->duration / AV_TIME_BASE);
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if (video_enc) {
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put_amf_string(pb, "width");
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put_amf_double(pb, video_enc->width);
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@ -288,7 +296,7 @@ static int flv_write_header(AVFormatContext *s)
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put_amf_double(pb, video_enc->codec_tag);
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}
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if(audio_enc){
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if (audio_enc) {
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put_amf_string(pb, "audiodatarate");
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put_amf_double(pb, audio_enc->bit_rate / 1024.0);
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@ -318,14 +326,14 @@ static int flv_write_header(AVFormatContext *s)
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}
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put_amf_string(pb, "filesize");
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flv->filesize_offset= avio_tell(pb);
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flv->filesize_offset = avio_tell(pb);
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put_amf_double(pb, 0); // delayed write
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put_amf_string(pb, "");
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avio_w8(pb, AMF_END_OF_OBJECT);
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/* write total size of tag */
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data_size= avio_tell(pb) - metadata_size_pos - 10;
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data_size = avio_tell(pb) - metadata_size_pos - 10;
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avio_seek(pb, metadata_count_pos, SEEK_SET);
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avio_wb32(pb, metadata_count);
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@ -340,10 +348,10 @@ static int flv_write_header(AVFormatContext *s)
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if (enc->codec_id == CODEC_ID_AAC || enc->codec_id == CODEC_ID_H264) {
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int64_t pos;
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avio_w8(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO ?
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FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
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FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
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avio_wb24(pb, 0); // size patched later
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avio_wb24(pb, 0); // ts
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avio_w8(pb, 0); // ts ext
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avio_w8(pb, 0); // ts ext
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avio_wb24(pb, 0); // streamid
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pos = avio_tell(pb);
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if (enc->codec_id == CODEC_ID_AAC) {
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@ -380,9 +388,8 @@ static int flv_write_trailer(AVFormatContext *s)
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AVCodecContext *enc = s->streams[i]->codec;
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FLVStreamContext *sc = s->streams[i]->priv_data;
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if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
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enc->codec_id == CODEC_ID_H264) {
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enc->codec_id == CODEC_ID_H264)
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put_avc_eos_tag(pb, sc->last_ts);
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}
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}
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file_size = avio_tell(pb);
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@ -399,32 +406,35 @@ static int flv_write_trailer(AVFormatContext *s)
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static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AVIOContext *pb = s->pb;
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AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
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FLVContext *flv = s->priv_data;
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AVIOContext *pb = s->pb;
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AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
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FLVContext *flv = s->priv_data;
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FLVStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
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unsigned ts;
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int size= pkt->size;
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uint8_t *data= NULL;
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int size = pkt->size;
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uint8_t *data = NULL;
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int flags, flags_size;
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// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
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// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n",
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// enc->codec_type, timestamp, size);
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if(enc->codec_id == CODEC_ID_VP6 || enc->codec_id == CODEC_ID_VP6F ||
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enc->codec_id == CODEC_ID_AAC)
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flags_size= 2;
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else if(enc->codec_id == CODEC_ID_H264)
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flags_size= 5;
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if (enc->codec_id == CODEC_ID_VP6 || enc->codec_id == CODEC_ID_VP6F ||
|
||||
enc->codec_id == CODEC_ID_AAC)
|
||||
flags_size = 2;
|
||||
else if (enc->codec_id == CODEC_ID_H264)
|
||||
flags_size = 5;
|
||||
else
|
||||
flags_size= 1;
|
||||
flags_size = 1;
|
||||
|
||||
switch (enc->codec_type) {
|
||||
case AVMEDIA_TYPE_VIDEO:
|
||||
avio_w8(pb, FLV_TAG_TYPE_VIDEO);
|
||||
|
||||
flags = enc->codec_tag;
|
||||
if(flags == 0) {
|
||||
av_log(s, AV_LOG_ERROR, "video codec %X not compatible with flv\n",enc->codec_id);
|
||||
if (flags == 0) {
|
||||
av_log(s, AV_LOG_ERROR,
|
||||
"video codec %X not compatible with flv\n",
|
||||
enc->codec_id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
@ -437,44 +447,43 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
|
||||
|
||||
avio_w8(pb, FLV_TAG_TYPE_AUDIO);
|
||||
break;
|
||||
|
||||
case AVMEDIA_TYPE_DATA:
|
||||
avio_w8(pb, FLV_TAG_TYPE_META);
|
||||
break;
|
||||
default:
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
if (enc->codec_id == CODEC_ID_H264) {
|
||||
|
||||
if (enc->codec_id == CODEC_ID_H264)
|
||||
/* check if extradata looks like MP4 */
|
||||
if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1) {
|
||||
if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1)
|
||||
if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (flv->delay == AV_NOPTS_VALUE)
|
||||
flv->delay = -pkt->dts;
|
||||
|
||||
if (pkt->dts < -flv->delay) {
|
||||
av_log(s, AV_LOG_WARNING, "Packets are not in the proper order with "
|
||||
"respect to DTS\n");
|
||||
av_log(s, AV_LOG_WARNING,
|
||||
"Packets are not in the proper order with respect to DTS\n");
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
ts = pkt->dts + flv->delay; // add delay to force positive dts
|
||||
|
||||
/* check Speex packet duration */
|
||||
if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160) {
|
||||
if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160)
|
||||
av_log(s, AV_LOG_WARNING, "Warning: Speex stream has more than "
|
||||
"8 frames per packet. Adobe Flash "
|
||||
"Player cannot handle this!\n");
|
||||
}
|
||||
|
||||
if (sc->last_ts < ts)
|
||||
sc->last_ts = ts;
|
||||
|
||||
avio_wb24(pb,size + flags_size);
|
||||
avio_wb24(pb,ts);
|
||||
avio_w8(pb,(ts >> 24) & 0x7F); // timestamps are 32bits _signed_
|
||||
avio_wb24(pb,flv->reserved);
|
||||
avio_wb24(pb, size + flags_size);
|
||||
avio_wb24(pb, ts);
|
||||
avio_w8(pb, (ts >> 24) & 0x7F); // timestamps are 32 bits _signed_
|
||||
avio_wb24(pb, flv->reserved);
|
||||
|
||||
if (enc->codec_type == AVMEDIA_TYPE_DATA) {
|
||||
int data_size;
|
||||
@ -498,25 +507,26 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
|
||||
avio_seek(pb, data_size + 10 - 3, SEEK_CUR);
|
||||
avio_wb32(pb, data_size + 11);
|
||||
} else {
|
||||
avio_w8(pb,flags);
|
||||
if (enc->codec_id == CODEC_ID_VP6)
|
||||
avio_w8(pb,0);
|
||||
if (enc->codec_id == CODEC_ID_VP6F)
|
||||
avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
|
||||
else if (enc->codec_id == CODEC_ID_AAC)
|
||||
avio_w8(pb,1); // AAC raw
|
||||
else if (enc->codec_id == CODEC_ID_H264) {
|
||||
avio_w8(pb,1); // AVC NALU
|
||||
avio_wb24(pb,pkt->pts - pkt->dts);
|
||||
avio_w8(pb,flags);
|
||||
if (enc->codec_id == CODEC_ID_VP6)
|
||||
avio_w8(pb, 0);
|
||||
if (enc->codec_id == CODEC_ID_VP6F)
|
||||
avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
|
||||
else if (enc->codec_id == CODEC_ID_AAC)
|
||||
avio_w8(pb, 1); // AAC raw
|
||||
else if (enc->codec_id == CODEC_ID_H264) {
|
||||
avio_w8(pb, 1); // AVC NALU
|
||||
avio_wb24(pb, pkt->pts - pkt->dts);
|
||||
}
|
||||
|
||||
avio_write(pb, data ? data : pkt->data, size);
|
||||
|
||||
avio_wb32(pb, size + flags_size + 11); // previous tag size
|
||||
flv->duration = FFMAX(flv->duration,
|
||||
pkt->pts + flv->delay + pkt->duration);
|
||||
}
|
||||
|
||||
avio_write(pb, data ? data : pkt->data, size);
|
||||
|
||||
avio_wb32(pb,size+flags_size+11); // previous tag size
|
||||
flv->duration = FFMAX(flv->duration, pkt->pts + flv->delay + pkt->duration);
|
||||
}
|
||||
avio_flush(pb);
|
||||
|
||||
av_free(data);
|
||||
|
||||
return pb->error;
|
||||
@ -537,9 +547,9 @@ AVOutputFormat ff_flv_muxer = {
|
||||
.write_header = flv_write_header,
|
||||
.write_packet = flv_write_packet,
|
||||
.write_trailer = flv_write_trailer,
|
||||
.codec_tag = (const AVCodecTag* const []){
|
||||
flv_video_codec_ids, flv_audio_codec_ids, 0
|
||||
},
|
||||
.codec_tag = (const AVCodecTag* const []) {
|
||||
flv_video_codec_ids, flv_audio_codec_ids, 0
|
||||
},
|
||||
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
|
||||
AVFMT_TS_NONSTRICT,
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user