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lavc/mjpegenc: Add an option to force outputting chroma matrix.
RFC 2435 suggests that mjpeg over rtp uses both two tables.
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@ -64,11 +64,14 @@ static void jpeg_table_header(AVCodecContext *avctx, PutBitContext *p,
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{
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int i, j, size;
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uint8_t *ptr;
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MpegEncContext *s = avctx->priv_data;
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if (avctx->codec_id != AV_CODEC_ID_LJPEG) {
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int matrix_count = 1 + !!memcmp(luma_intra_matrix,
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chroma_intra_matrix,
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sizeof(luma_intra_matrix[0]) * 64);
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if (s->force_duplicated_matrix)
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matrix_count = 2;
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/* quant matrixes */
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put_marker(p, DQT);
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put_bits(p, 16, 2 + matrix_count * (1 + 64));
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@ -299,6 +299,7 @@ typedef struct MpegEncContext {
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uint16_t chroma_intra_matrix[64];
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uint16_t inter_matrix[64];
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uint16_t chroma_inter_matrix[64];
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int force_duplicated_matrix; ///< Force duplication of mjpeg matrices, useful for rtp streaming
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int intra_quant_bias; ///< bias for the quantizer
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int inter_quant_bias; ///< bias for the quantizer
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@ -596,6 +597,7 @@ typedef struct MpegEncContext {
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{ "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
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{ "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
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{ "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
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{ "force_duplicated_matrix", "Always write luma and chroma matrix for mjpeg, useful for rtp streaming.", FF_MPV_OFFSET(force_duplicated_matrix), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS }, \
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extern const AVOption ff_mpv_generic_options[];
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@ -30,7 +30,7 @@
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#define LIBAVCODEC_VERSION_MAJOR 57
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#define LIBAVCODEC_VERSION_MINOR 4
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#define LIBAVCODEC_VERSION_MICRO 100
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#define LIBAVCODEC_VERSION_MICRO 101
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#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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LIBAVCODEC_VERSION_MINOR, \
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